F. Hasan, A., and S. . Tauseef Hossain. “Numerical Investigation of Heat Transfer Rate in Helically Coiled Pipe Using Al2O3/Water Nanofluid”. Diyala Journal of Engineering Sciences, vol. 13, no. 4, Dec. 2020, pp. 27-36, doi:10.24237/djes.2020.13404.